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Longitudinal changes of body mass index, spirometry and diffusion in a general

By Eur Respir J, G. Viegi, Population M. Bottai, F. Pistelli, F. Di Pede, L. Carrozzi, S. Baldacci, G. Matteelli and A. Scognamiglio


ABSTRACT: The aim of this study was to evaluate the effects of body mass index (BMI) changes over an 8-yr follow-up, on longitudinal changes of vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and carbon monoxide diffusing capacity of the lung (DL,CO) indices in a general population sample of North Italy. To avoid including weight changes possibly related to physical growth, only the 1,426 adults (w24 yrs, 46 % males) with complete follow-up were selected. Median linear regression models were applied to estimate the medians of change (computed as followup minus baseline values) of VC, FVC, FEV1 and DL,CO indices, as functions of changes of BMI over the follow-up period, separately by sex, after considering several potential confounders and effect modifiers. The extent of lung function loss tended to be higher among those who, at baseline, reported greater BMI values. Males experienced larger losses than females (20 and 16 mL FEV1 median reduction for a BMI unit increase in males and females, respectively). Conversely, longitudinal changes of BMI caused a slight an

Year: 2009
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